Cut the chicken breast into bite-sized pieces and pat them thoroughly dry with a paper towel.
In a small bowl, toss the chicken with the arrowroot powder, sea salt, and black pepper until evenly coated.
In a separate small jar, whisk together the orange juice, tamari, honey, grated ginger, and minced garlic to create the glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and cook for 3-4 minutes per side until golden brown and cooked through.
Remove the chicken from the pan and set aside, then add the broccoli florets and sliced red bell pepper to the same pan.
Sauté the vegetables for 3-5 minutes until they are tender-crisp and bright in color.
Return the chicken to the pan and pour the orange sauce over the mixture.
Stir constantly for 1-2 minutes until the sauce bubbles and thickens into a glossy glaze that coats every piece.
Serve immediately while hot and the chicken is at its crispiest.